Device for hemming of sheet metals, particularly of coachwork sheet metals in automobile manufacture
US6029493A · kind A · utility
6Cited by
5References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 23, 1998 |
| Grant date | Feb 29, 2000 |
| Priority date | — |
| Expiry date | Oct 23, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21D39/021
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A device for hemming of sheet metals, particularly of coachwork sheet metals in automobile manufacture, wherein a driven ram with superposed hemming bed arranged in a base rack presses the sheet metals to be hemmed against stationary hemming tools. The working stroke and the force for hemming of sheet metals is pneumatically transmitted to ram by the aid of a compressed-air cushion arranged between base rack and ram.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.